Shift-block lock and retainer



G. C. JENSEN.

SHIFT BLOCK LOCK AND'RETAINER. APPLICAHON FILED NOV. 12. I919.

Patented Aug. 3, 19 20.

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A TTOR NE Y5 m m d B PATENT OFFICE.

GEORGE C. JENSEN, 0F OAKLAND, CALIFORNIA.

SHIFT-BLOCK LUCK AND RETAINER.

Application filed November 12, 1919.

To all'whom it may concern:

Be it known that I, Gnonen C. JnNsnN, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain 'new and useful Improvements in Shift- Block Locks and Retainers, of which the following is a specification.

The present invention relates to an improved form of device adapted for associaion with a pair of shifter blocks which are longitudinally movable on supports and the principal objects are to provide a construction which is preferably carried by the gear case cover and which is operated by the movement of the means for selectively moving the blocks whereby the blocks are capable of being retained in their adjusted position, one looked from movement during the movement of the other, and both locked from movement when desired.

The invention consists primarily in the incorporation or provision of a pair of independently movable pivotally mounted arms adapted for actuation by the movement of the means for controlling the shifting of the blocks for cooperating with the blocks and a means for cooperation with said pivoted arms to prevent movement thereof by the means for selectively operating the blocks. Another feature is to provide a means whereby when the pivotally mounted members are held from movement that the same cooperate with a member carried by the gear case, which preeludes the removal of the cover from the case.

With the above mentioned and other objects in view the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings, and set forth in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of con struction within the scope of the claims may be resorted to without departing from the spirit or sacrificingany of the advantages of the invention.

To more fully comprehend the invention, reference is directed to the accompanying drawings, wherein,

Figure l is a view in side elevation, partly in section, disclosing the preferred embodiment of my invention.

Specification of Letters Patent.

Patented Aug. 3, 1920.

Serial No. 337,548.

Fig. 2 is a transverse vertical sectional view taken on the line 2-2, Fig. 1.

Fig. 3 is a horizontal sectional view taken on the line 3-3 of Fig. 1.

F 4 is a detailed sectional view taken on the line l4 Fig. 1

Fig. 5 is a view similar to Fig. 4 with a shifter block controlling lever moved to en agement with one of said blocks and free of the other block.

In the drawings wherein like characters of reference designate corresponding parts, 1 indica es a gear case within which is the transversely disposed block supporting rod 2 on which are mounted for selective movement the shifter blocks 3, depending from which are the forks 4 for engaging the gears to be shifted. The blocks are arranged on the rod end to end, and upwardly from the same extend the arms 5 preferably positioned at adjacent ends of the blocks 3, and each extending beyond the end of its asso- -ciated block to overlap the other. Each of the arms 5 is formed in its upper surface with a notch 6 which are adapted to lie parallel on the movement of the blocks 3 to position the gears controlled thereby in nonpower transmitting or neutral position, and into said notches is adapted to extend the lower end 7 of a block operating lever 8 fulorumed for universal swinging move ment in a cover 9, adapted to rest on and close the upper open top of the case 1. The lever 8 when in its vertical or non-operating position is adapted to lie with the lower end 7 seated within both notches 6 as in Figs. 3 and i of the drawings, and when it is desired to operate one of said blocks the lever is moved laterally 011 its fulcrum to position'the lower end 7 thereof in full engagement with one of the said notches 6, and removed from the other notch 6, as in Fig. 5 of the drawings. The arms 5 are 7 formed on their outer face and at each side of the respective notches 6 with the speed stops 10, Figs. 1, 2 and 8 of the drawings. Mounted on the interior of the cover 9, are the levers ll, fulcrumed at one end on the vertically disposed bolt 12 and their body portions adapted to extend one on either side of the outer face of the respective arms 5, the free ends of said levers being bent toward each other as at 13 and the terminal end portions beyond said bends being disposed in alinement with the body portionof the opposing lever as at 14f. This construction provides the crossing or overlapping of the free ends of the levers 11 illustrated in'Fig. '3 of the drawings, said free ends lying in spaced relation. The free ends of the'levers 11 are normally drawn toward each other and maintained under "springtension from separation by a coiled spring 15 secured at-its opposite ends in the respective levers 11, Figs; 1 and 3 of the drawings. Depending from the under side of the lever 11 preferably. in the center of their main body portion and adjacent their inner edge are the downwardly extending lugs 16, each of a Configuration corresponding to the recess 6, Fig. 1 of the drawings, and-said lugs each carries on its inner face a member 17 preferably formed with a rounded head. on the lateral movement of the lower'end 7 of the lever 8 to position the same in full enga ement with one of the notches 6xto1operate the block associated with said notch, as in Fig.

' of the. end of the lever 7 will cooperate with the member-17 associated with the 0, one side lever 11 of .the'block engaged by the lever 7, and the spring 15 will act on the oppos ing-lever llto move its lug in full engagement with its notch 6, Fig. 5 of the vdrav ings, which movement will retain one of the blocks 3 in its Ineutral positionsand prevent movement thereof.

On .the longitudinal movement of the engaged block-by the operation of the lever 7,

the lower end of the lever will ride from a member'li' and :permit said member 17 to contact-with the face of the arm 6 of the moved block to seat within one of the speed stops 10 when the same is moved into line therewithdue to the operation of the block. This yielding movement of the lever 11 is accomplished by the spring 15. It will be understood that on the movement of the lower end ofvthe lever 7 from one ofthe notches 6, said notch is immediately engaged by the lug on its associated lever 11, and isv precluded from movement, and that l the block when moved bythe operation of 18 longitudinally movable in an open ended bore 19 in the; cover 9 and arranged when said bolt is in its depressed position to have the lower end thereof project between the terminal extensions. 1 1 and the levers 11, and thus preclude movement of said levers on their fulcrum 12, at which time the lower- 7 end 7 of the lever 8 is held inthe position this construction it is also possible to.

with the depression 22 when the plunger is in its depressed position, the plunger being normally raised by the action of the coiled spring 23 mounted in the bore 19. 7

In the present constructiomthe cover 9 is capable of being locked on a-case at sucl time as the bolt 18 is in its depressed position, and in accomplishing this result I provide the flanged arms 24, one extending upwardly from the case 1 at opposite sides of the levers 11, Figs. 2 and 3 of the drawings,

. and the flanged-ends of said arms are adapted to overlie said levers 11 until such time as the levers are pressed lnwardiy toward each other, which is only possible when the locking bolt '18 is in its released position, and the operating lever 8 is removed from the cover 9.

It will be apparent that in the present construction I provide a pair of pivoted arms embracing the shifter blocks and incorporate with said arms spring means whereby the arms serve as retainers for holding the blocks in their adjusted position and also associate with levers 11 a means for preventing simultaneous or independent movement of said levers 11 on their fulcrum, thus locking the blocks against movement by the operating lever 8.

Having thus described my invention what I claim is:

1. In combination with a supporting rod, a pair of independently movable shifter blocks thereon arranged in end'to end relation and each provided with an operating lever receiving recess, an operating lever cooperating with the lever receiving recesses for selectively operating said blocks, a pair of levers one associated with each shift-er block and fulcrumed to swing transversely of the plane of movement of said blocks, means forlocking said pair of levers from pivotal movement relatively to said blocks whereby'the same engage said operating lever andmaintain the same in the recess of both blocks thereby locking said blocks from movement.

2. In combination with a pair of shifter blocks mounted for independent movement on a single-shaft and each'provided with an upstanding arm, each formed with an operating lever receiving .recess,an operating lever cooperating-with the lever receiving recesses for selectively operating said blocks, a pair of levers embracing the lower end of said operating lever and capable of independent movement by said operating ever in a plane transversely of the plane of movean operating lever coeperating with said recesses and adapted for lateral movement from one recess to another for selectively operating said shifter devices,a pair of levers one cooperating with each shifter device and fulcrumed at adjacent ends to swing laterally of said devices, means for yieldably forcing said arms together toward said shifter devices, means on each lever for cooperating with the speed stop of its associated shifter device to retain the shifter device in its set position, said means adapted for engaging with the recess of one-shifter device on the movement of the operating lever therefrom into full engagement with the recess of the other shifter device whereby one of said shifter devices is locked from movement during the movement of the other device from a predetermined position, and means coeperating with the free ends of said levers to prevent lateral movement thereof whereby said shifter devices are locked from operative movement.

4. In combination with a pair of independently movable shifter devices each provided with an operating lever receiving recess, a fulcrumed operating lever normally cooperating with both of said recesses and adapted for lateral movement from one recess to another for selectively operating said shifter devices, a pair of levers embracing said shifter lever below its point of fulcrum, said levers fulcrumed at adjacent ends to swing laterally with said shifter lever, and means for coeperating with the free ends of said pair of levers for locking the same from lateral movement whereby said shifter lever is held in position to cooperate with both of said recesses thereby locking said shifter devices from movement.

5. In combination with a gear case provided with a pair of independently movable shifter devices, a cover for said case, -a shifter lever carried thereby for independently operating said shifter devices, a pair of spring held levers one cooperating with each shifter device, said levers each fulcrumed at one end to said cover to swing laterally of said shifter devices and adapted for frictionally engaging the associated devices to retain the same in their adjusted position and one to engage its associated device to hold the same from movement during the operative movement of the other shifter device, and a lock controlled member carried by the cover for cooperating with ment of said shifter devices.

the free ends of said levers to lock the same from lateral movement and precludemove- 6. In combination with a gear case provided with a pair of shifter devices therein independently movable in a parallel plane, a shifter lever for independently operating said shifter devices, a pair of spring held levers within said case one coeperating with each shifter device and longitudinally of which said shifter devices are movable, a fulcrum associated with the corresponding ends of each lever of said pair to permit the same to swing laterally of said shifter devices, said levers adapted for frictionally engaging their associated shifter devices to retain the same in their adjusted position and one to engage its associated device to hold the same from movement during the operative movement of the other shifter device, and alock controlled bolt capable of movement to engage the free ends of said levers to lock the same from lateral swinging movement and preclude movement of said shifter devices.

7. In combination with a gear case provided with a supporting shaft, a pair of shifter blocks mounted thereon for independent movement and provided with upwardly extending arms one overhanging'the adjacent block, said arms being each provided in its surfacewith a notchand one or more speed stops, a shifter lever for independently operating said shifter devices, a pair of spring held levers within said case, one cooperating with each block arm and longitudinally of which said blocks are movable, said levers being fulcrumed at corresponding ends to swing laterally of said arms and provided with means adapted to frictionally engage the speed stops of the respective arms to retain said blocks in their adjusted position and for reception within the notch of their respective arms to hold their associated blocks from movement on the movement of the other block from a predetermined position, and means for locking the free ends of said levers from swinging movement whereby operative movement of said blocks is preeluded.

8. In combination with a gear ease provided with a supporting shaft, a pair of shifter blocks mounted thereon for independent movement longitudinally thereof and each provided with an upwardly extended arm each overlying the other block, said arms being each formed with a notch and one or more speed stops, a shifter lever for independently operating said shifter devices, a pair of spring held levers one cooperating with each block and longitudinally of which said blocks are movable, said levers mounted at one end to swing on a common fulcrum and arranged with their free ends crossing and disposed in alinement with each other,

and aZloc'kicontrol-led locking bolt adapted forsextending between the crossed free ends of said levers to prevent "lateral movement thereof vand :to look said shifter blocks in t heir adjusted position.

9.. In;(eomhinat-ion with a gear case pro- ,vi ded wiith a pair of shifter devices, a cover for the -;case, -a lever for selectively operating said (16361068, a PEL1 1'Of pivoted levers carried by said-cover for. lookingsald devices int-their adjusted position, a pair offianged mem- :bers on ,saidcase forroverlyingisaid levers, I

and :means for looking --said levers .irom swinging {movement and .t-o lie beneath said overlying 3111611113618 whereby said shifter ade vides'iare leaked from movement and said cover is locked to saidcase.

l0.- In combination with a pair of independently movable shifter-blocks each providedwith an =-op erating lever receiving re- ;oess, operating lever cooperating with-the lever receiving recesses ior selectively operating said -blocks, a lever associated with each-shifter block and fulcru-med to swing transversely of the plane of movement of said'blocks, imeans for locking said levers from pivotal movement relative 'to vsaid blocks, whereby the same engage isaid'reeesses of both t bloc-ks thereby looking said .lb lecks from 'im-ovement. 7

11. In combination with agearoase provided with a pair of shifterideviees, a cover :-for the-:casaaa lever for selectively operating said devices a pair ,of pivoted levers carried bysaid cover for-looking said devices intheir adjusted position, said ease provided with means for cooperating with said levers and means for lockingsaid levers from swinging movement and to engage w1th.sa1d.c0

perating means whereby said shifter devices are locked from movement and StlCl cover is locked "to said case.

-12. In combination with a pair of independently movable shifter blocks, each provided with an operating lever receiving .reoess, an operating lever cooperating with -.the respective lever \reeeiving recesses for seleetively operating said blocks, ,a pair of spring held "levers, one cooperating with each block and filler-tuned to swing trans- 

